Blackbody Prediction for CMBR: Alpher, Herman, and Gamow's 1948 Theory

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I know the CMBR temperature was approximately predicted by Alpher ,Herman and Gamow around 1948, but I can't locate a source specifying when and how the blackbody form of the CMBR was predicted.
Does anybody have this information?

thanks
 
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How about this:
Dicke and his colleagues reasoned that the Big Bang must have scattered not only the matter that condensed into galaxies but also must have released a tremendous blast of radiation. With the proper instrumentation, this radiation should be detectable.
http://en.wikipedia.org/wiki/Discovery_of_cosmic_microwave_background_radiatio

and:
After 10−6 seconds, the early universe was made up of a hot plasma of photons, electrons, and baryons. The photons were constantly interacting with the plasma through Thomson scattering. As the universe expanded, adiabatic cooling caused the plasma to cool until it became favorable for electrons to combine with protons and form hydrogen atoms. This recombination event happened at around 3000 K or when the universe was approximately 379,000 years old.[8][nb 4] At this point, the photons scattered off the now electrically neutral atoms and began to travel freely through space, resulting in the decoupling of matter and radiation.[9]
http://en.wikipedia.org/wiki/Discovery_of_cosmic_microwave_background_radiation

Basically, the early universe was hot plasma and hot plasma emits a black body spectrum of radiation. When it cooled below a certain temperature and matter started to condense into atoms, it became transparent. That temperature is the temperature at which the radiation was then released to travel unabated through the universe as the CMB.
 
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Yes, I read that in wikipedia. But that is not what I asked, I was interested in knowing if and when someone, before CMBR was detected, had specifically predicted the almost perfect blackbody quality of this radiation. It is more of a cosmology history question than a conceptual question.
Perhaps somebody has studied this in this cosmology forum?
 
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